Error when opening mail

[dselvey]

With certain types of attachments it cause a javascript error as follows:

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Webpage error details

User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; SLCC1; .NET CLR 2.0.50727; InfoPath.2; .NET CLR 3.5.30729; .NET CLR 1.1.4322; .NET CLR 3.0.30729)
Timestamp: Mon, 11 Jan 2010 10:13:06 UTC


Message: 'null' is null or not an object
Line: 769
Char: 1
Code: 0
URI: http://mail.mydomain.com/zimbra/mail
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This stops the email being read,the only thing i can see is that all the emails have in common are JPG photos attached that are used with HTML (Logos, etc). (Although i have received similar messages that have worked.)

The few instances of this happening have came from various sources, im wondering whether it is a mail client out there that constructs messages differently to what Zimbra expects when parsing attachments.

Any Ideas would be much appreciated!

Dan

PS. Using Zimbra 6.0 OSS